Mechanism for turning the edges of sheet material.



UNITED STATES PATENT OEEIOE.

rHEoDoRE c. HOOK, oF PHILApELPHIA, PENNSYLVANIA.

Specication of Letters Patent.

imcmimsn Fon TURNING Tm: armes oii' s'zran'i MATERIAL.

'Patented Feb. 11, 190s.

Application filed April 12. `1905.` Serial No. 255.099.

To all ywhoml it may concern.:

Beit known that I, THEODORE C. HOOK, a citizen of the United States, residing at Philadelphia,v in the county of Philadelphia and ism for Turni State of Pennsylvania, have invented certain new and useful Implrovcments in Mechanthe dges of Sheet Material,

of which the fo lowing isl a specification.

tion will fully appear by reference to the fol'- held lowing descri tionl and the accompanying drawings in i ustration thereof, lof which- -Fiure l is a side elevation of the mechanism s .own in its initial position; and Fig. 2 is an enlarged side' elevation of a portion o`f the mechanism showing a box having a cover pressed thereon by a holding device-andthe Aextension oredge of the cover held bv a turndevice in the position to which it has been fo ded. l

The box A which is to be covered is held u on the form'B by which it is manipulated. e cover C has the sides cwhich are to bel ainst the sides of the box and the side extensions c which are tObe turned over the edges against the inner surfaces of the sides of the box. y

The brackets D are part ofthe frame Work of the machine, which maybe of .any suitable design, it'being understood that the mechan ism shown constitutes only so much of a box covering machine as is necessary to illustrate the improvements.

The blocks E, eachhaving a projection e, are ldesigned to holdl the against the sides of the box. These blocks are iixed on theinner ends 'of the respective rods F, which aremovable longitudinally in the bearings d of the brackets, the rods reciprocating to press the blocks against and withdraw them from the box and cover on-tlie form.

The tumblers' G, each having the fingers J is placed loneac Y .and the stop f. These springs act upon perform its -unctions rapidly,

sides of the cover or side extensions over the box edges against the surfaces of tl1 ebox sides.

The tumblers l g and-Ig', are designed to turn the cover edges are pivotally connected by the pins fito the 'inner ends of the respective rods H, which are movable longitudinali 'in the bearingsd in the brackets, the ro s reciprocating to m'ove the tumblers into and out'of engage .nient with the edges of the cover and box on-the form. y

Links or yokes I vare fixed to thefrespective rodsH and`are ings r'movable on t e rods F. These rods each have the stops and f on either side of the correspondin ink and a coiled spri rod between the lin thellinks to'move them against thestops f,

'thereby drawing back the rods Hand tum'- blers G to the position shown in Fig. 1. The

v'springs are compressible to permitthese rods to move inward and turn the tumblers to the position shownin Fig. 2 after. the blocks E have reached the limit of. their `inward movement, in contact 4with the sides of the box 'and ,cover on'the form.

rovided' with the bearl It willnow b'e understood that when a box withits cover are held by the form between v thepresser blocks, as shownin Fi 1, `and the`\tuinbler rods are thrust inwar y, these rods will act throu h the links upon the springs to thrust t e' presser block .rods

inwardly so that the blocks press the sides of Y the cover against-th sidesvof the box. p blocks having thus reached the limit oftheii` inward movement, the tumbler rods continue The to movcinwardly against the action of the 'l l springs upon the links, and the tumblers are a carriedV to the position shown in Fig. 2, the

lower` finger of each tumblerengaginv the 95 projection on the corresponding pressertblock and the block being thereby turned so that the upper finger folds the edge of the cover over the edge' ofthe box.` 'The been folde the .tumbler rods are drawn back to disengag-e sequence therewi ico the tumblers, aridf-'inf 'the presser bloclits,"lhel springs acting to holdthe presser blocksy inl engagement with the boxand cover-until the tumblers have been disengaged therefrom.

ict.

Two sideexten'sions of the cover beingathus folded, the other two extensions may be folded4 by turnin duplicating that own, or otherwise adding to this mechanism.

thel box, by mechanism Having described my invention, I claim l. ln apparatus of the class described, a form, e plurality oi independently movable oppositely reciprocating holding devices adapted to press material against the same, and a plurality of turning devices one for each holding device and reciprocatingin paths parallel to the paths of reciprocation of the respective holding devices and having limited movements of reciprocation independent ci the movements of said holding devices respectively, each turningl device benglconstructed to engage and be turned by respective holding device.

2. ln apparatus or' the class described, a ferm, a reciprocating rod, a presser block on said rod, a second reciprocatingrod, mechenisin comprisingv s spring for connecting seid rods, and a vturning block pivotedon A20,seidseco'nd r'od, 'sa-iid turning block being eraeei o erated through Contact with said presser 'i blbck. 8. In apparatus of the class describedya bearing, a rod reciprocatino' in said bearing and having a device for ho ding material toy be folded, a second bearing, a rod rciprocating in said second bearing, iiexible mechanism for connectlng said rods whereby one has a' limited motion with reference to the other,

and a device pivoted on said second-rod and tilted by engaging a 'part with relation :to which it moves to Jfold an edge of the material held by seid first device. 2

In testimony whereof, l have hereunt affixed my signature in the presence of two Witnesses ERNST FAHRIG, JOHN BRONDE;

THEonoRn cjnooK. 

